A fertilizer American English or fertiliser is any material of natural or synthetic origin other . Ca5PO43OH. These minerals are converted to water-soluble phosphate salts by treatment with sulfuric H2SO4 or phosphoric acids H3PO4.

Of all the major fertilizer nutrients, nitrogen is the main nutrient affecting soil pH, and soils solubility of aluminium Al or manganese Mn as soil pH falls Wright 1989. Use of mineral or organic fertilizers in agriculture increases inputs of

Many prefixes such as mineral, inorganic, or chemical are often used to On a fertilizer bag, the NPK content is always written in the sequence N, P2O5, K2O. . Water soluble phosphate as P2O5 by weight: minimum 15.8%; Sulphur as S